Re: [Matplotlib-users] Using labels with "twinx()"

[Jae-Joon L. <lee...@gm...>]

On Wed, Sep 28, 2011 at 3:32 PM, Klonuo Umom <kl...@gm...> wrote:
> How to deal with this, without manually positioning legends and if possible
> including all annotated plot lines in one legend?

*twinx* creates a new axes. Thus there are TWO axes, and you need to
do some manual adjustment. I believe that the solution suggested by
Stephen George is essentially the best way, although you may try to
tweak things using the Axes.get_legend_handles_labels method (
http://matplotlib.sourceforge.net/users/legend_guide.html#what-to-be-displayed
).

Alternatively, you can try the axes_grid1 toolkit which automatically
merges legends for you. Check out the example below.

http://matplotlib.sourceforge.net/mpl_toolkits/axes_grid/users/overview.html#example-1-twinx

Regards,

-JJ